Finding the Fourth Proportional to 12,697.07, 17,516.12 and 8,222.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,697.07 : 17,516.12 = 8,222.31 : x
2. Step 2: Convert to fraction form
   12,697.07/17,516.12 = 8,222.31/x
3. Step 3: Cross multiply
   12,697.07x = 17,516.12 × 8,222.31
4. Step 4: Simplify right side
   12,697.07x = 144,022,927.53
5. Step 5: Solve for x
   x = 144,022,927.53/12,697.07
6. Step 6: Final answer
   x = 11,343.01